| 11. | These delineations distinguish variations in drainage, soil type, water resources, and primary production.
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| 12. | Terrestrial freshwater ecosystems generate about 1.5 % of the global net primary production.
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| 13. | The energy remaining after respiration is considered the net primary production.
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| 14. | Elkem has a primary production capacity of 210, 000 metric tons per year.
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| 15. | Further tests were being done, the Primary Production Department said.
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| 16. | It has factories in industrial dyes, food and primary production.
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| 17. | The majority land use within the locality is primary production.
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| 18. | The principal land use in the locality outside Kybybolite township itself is primary production.
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| 19. | Nearly all primary production, or photosynthesis, happens in this zone.
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| 20. | They generate 32 % of the world's net primary production.
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